#include<bits/stdc++.h>
using namespace std;
map<int,int> att;
signed main(){
    freopen("duel.in","r",stdin);
    freopen("duel.out","w",stdout);
    int n,i,inp,ans=0;
    scanf("%d",&n);
    for(i=1;i<=n;i++){
        scanf("%d",&inp);
        att[inp]++;
    }
    for(auto &&x:att)
        ans=max(ans,x.second);
    printf("%d",ans);
    return 0;
}
